Bartender Gear Measured Pour Spouts for Half Gallon & 1.75 Liter Bottle Pourer - Auto-Measuring 1 oz (30 mL) Cork 25mm 6-pack Beautifully functional and tight fitting Plastic Measured Pour Spouts with extra bottle collar to fit snug around the bottle opening. 1.75 Liter & Half Gallon size Poly Corks fitted Pour Spout Cork size 25mm diameter Perfect for many 1.75 liter bottles, 1800, Patron 750 ml bottles [not for Patron 1.75] and many other lager bottle neck diameters 25mm Measured pours mean liquor cost stay in-line for your bottom line, compared to free pouring pour spouts. So get a grip on your inventory control, the first step is with these top quality measured pour spouts.